body {
  margin: 0;
  overflow: hidden;
  font-family: '微软雅黑', sans-serif;
  height: 100%;
}
  
h1 {
  font-size: 2rem;
  letter-spacing: -1px;
  position: absolute;
  margin: 0;
  top: -4px;
  right: 5px;
  color: transparent;
  text-shadow: 0 0 4px white;
}